Gram BAKER M 950 User manual

765041776 Rev. 006 1
GRAM BAKER M/F 950/550
User manual

765041776 Rev. 006 2
Hoshizaki Europe B.V.
Burgemeester Stramanweg 101
1101 AA Amsterdam, The Netherlands
Made in Denmark, CVR-No. 43 12 21 93

765041776 Rev. 006 3
Contents
Intended use ........................................................................................................................................... 4
Safety information ................................................................................................................................... 5
Location ................................................................................................................................................... 6
Optimizing the energy consumption ........................................................................................................ 8
General description ................................................................................................................................. 9
Refrigerant / GWP value ....................................................................................................................... 10
Climate / temperature class .................................................................................................................. 10
Electrical connection ............................................................................................................................. 10
General use ........................................................................................................................................... 12
Operating the product ........................................................................................................................... 14
Errors and alarms .................................................................................................................................. 15
User menu ............................................................................................................................................. 17
1. Setting of dry refrigeration ............................................................................................................. 18
2. Setting of rapid thaw ..................................................................................................................... 18
3. Local alarm setting ........................................................................................................................ 19
4. Local alarm setting ........................................................................................................................ 19
5. Temperature offset ........................................................................................................................ 20
6. Alarm limits .................................................................................................................................... 20
7. Number of defrosts ........................................................................................................................ 20
Troubleshooting .................................................................................................................................... 21
Keylock .................................................................................................................................................. 22
Defrosting .............................................................................................................................................. 22
Defrost water ......................................................................................................................................... 23
Door closing mechanism ....................................................................................................................... 24
Power failure ......................................................................................................................................... 24
Cleaning ................................................................................................................................................ 24
Door gaskets ......................................................................................................................................... 25
Long term storage ................................................................................................................................. 25
Service .................................................................................................................................................. 26
Disposal................................................................................................................................................. 27
Wiring diagram ...................................................................................................................................... 29
Piping diagram M .................................................................................................................................. 30
Piping diagram F ................................................................................................................................... 31

765041776 Rev. 006 4
ENGLISH
Thank you for choosing a quality product from Hoshizaki.
This manual will advise you how to install, use and maintain your new product.
Before our products leave the factory, they undergo a full function and quality test.
Should you nevertheless experience problems with the product, then contact your
local dealer. Hoshizaki representatives and dealers placed all over the world are
ready to help you.
Please refer to your dealer for information about the warranty coverage of your new
Gram product.
Any warranty is subject to correct use according to specifications in this user manual,
where e.g. common maintenance and eventual repairs are carried out by authorized
technicians with proper knowledge of the product and only using original spare parts.
Changes in installation and other use of the product than prescribed in this manual,
might affect the operation and durability of the product.
The manual is written according to our current technical knowledge. We constantly
work on updating this information, and we reserve the right to make technical
changes.
Intended use
The product is intended for the storage of foodstuffs in non-household environments
but not for the display to or access by customers.
The product is designed for storage at a constant temperature and not be used for
chilling down or freezing hot/fresh foodstuff.
The product is only to be used for the purpose for which it has been expressly
designed. Any other use could cause that the foodstuff stored in the product is not
kept at the correct temperature or even damage the product.
The product is not suited for storing blood plasma, laboratory samples,
pharmaceuticals or similar substances.
The manufacturer will not be held liable or responsible for any damage caused by
improper, incorrect or unreasonable use of the product.

765041776 Rev. 006 5
Safety information
Important
Description of symbols used in this manual.
Warning Lacking observation to these instructions might result in accidents with
personal injury.
Important If these instructions are not observed, the product might be damaged or
destroyed.
Be aware that Hoshizaki has taken precautions to ensure that the safety of the
product is in order.
Please read carefully the following information regarding safety.
It is important, that everyone who are to use or install the product, to have access to
this manual.
This appliance is not intended for use by persons with reduced physical, sensory or
mental capabilities, or lack of experience and knowledge, unless they have been
given supervision or instruction concerning use of the appliance by a person
responsible for their safety.
Children should be supervised to ensure that they do not play with the appliance.
The appliance might contain parts with sharp edges in the compressor
compartment, and in the inside compartment.
The appliance is not to be transported on a sack truck, there is a danger of losing
the balance, causing danger to persons.
Do not pull the power cord to disconnect the appliance, or when moving the
appliance.

765041776 Rev. 006 6
Location
When receiving the product, check the packaging material for damage.
If any damage occurs at the packaging material, it should be considered if the
product might have been damaged too. If the damage is substantial, please contact
your dealer.
The transport pallet can be removed by loosening the screws that fasten the pallet to
the product.
This task requires at least 2 persons. The heaviest part of the product is at the top.
Be aware of this, when removing the transport pallet.
Fig.1
If the cabinet has been transported in horizontal position it must stand upright at
least 2 hours before it is started to allow the oil from the compressor to run back.
Because of the heavy weight of the product, the floor might be damaged or
scratched when moving the product.

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Correct set up gives the most effective operation.
The product should be located in a dry and adequately ventilated room.
To ensure efficient operation, it may not be placed in direct sunlight or against
heat-emitting surfaces. The product is designed to operate in an ambient
temperature between +16C and +40°C.
Avoid placement of the product in a chlorine/acid-containing environment
(swimming bath etc.) due to risk of corrosion.
The product and parts of the interior is equipped with a protecting film, which
should be removed before use.
Clean the product with a mild soap solution before use.
The set up place must be level and horizontal.
For versions with legs, use the adjustable legs to make sure that the product stands
level and upright.
For versions with castors, the locking devices of the two front castors must be
activated, when the product is in place. The base must be level, and the product may
not be placed on frames or the like.
Fig. 2

765041776 Rev. 006 8
Optimizing the energy consumption
 Correct set up gives the most effective operation.
 The product should be located in a dry and adequately ventilated room.
 To ensure efficient operation, it may not be placed in direct sunlight or against
heat-emitting surfaces. The product is designed to operate in an ambient
temperature between +16C and +40°C.
 Do not keep the door open for too long.
 Keep the condenser filter clean – to be cleaned at least every 2 weeks.
 Do not set the temperature setpoint too low.
 There must always be 20 cm of free space above the product, to ensure that
the heat from the condenser can be led away.
 The product should be placed as close as possible up against the wall. For
products with a heating element in the tray on the cabinet backside, however
max. 75 mm from the wall.
Fig. 3
Max. 75 mm

765041776 Rev. 006 9
General description
Fig. 4
Door
Gasket
Air intake
Air distribution plate
Foot pedal opener

765041776 Rev. 006 10
Refrigerant
/ GWP
value
Refrigerators
Refrigerant
Charge
kg
GWP
CO2
equivalent t
BAKER M 950 G
R290
0,15
0
3
0,
000450
BAKER M 550 G R290 0,085 3 0,000255
Freezers
BAKER F 950 G R290 0,150 3 0,000450
BAKER F 550 G
R290
0,145
3
0,000435
Climate / temperature class
Products are tested according to the following climate and temperature classes.
Information about the product’s climate and temperature class can be found at the
name plate (see fig.8)
Electrical
connection
Read the text below thoroughly before electrical connection.
The product is intended for connection to alternating current. The connection
voltage (V) and frequency (Hz) are shown on the name plate in the cabinet (see
Fig. 8). Only the supplied cord is to be used.
Never use an extension cord for this appliance!
If a wall socket is placed in a longer distance than the length of the supplied power
cord, contact an electrician to establish a wall socket within the range of the
supplied power cord.
If the product is defective, it must be examined by an authorized technician with
proper knowledge of the product during the guarantee period, if it is a product
with built-in compressor.
If it is a product connected to an external compressor unit, it must be examined
by the company who has connected the product to the unit.
Outside the guarantee period, it is advisable to use the service advised by your
dealer. If this is not the case, assistance is required from an authorized technician
with proper knowledge of the product
.
Climate class
3
25
°C /
60 % RH
4 30°C / 55 % RH
5
40
°C /
40 % RH
Temperature
class
L1 -18°C
M1
+5
°C

765041776 Rev. 006 11
Fig. 5
Always disconnect the power if interruptions in power supply occur, and when
electrical parts are removed/put on, and before cleaning and maintenance of the
product.
Repairing of electrical/technical parts may only be performed by authorized
technicians with proper knowledge of the product.
Do not use the product before all coverings are installed, so that live or rotating
machine parts cannot be touched.
The product is not to be used outdoor.
All earthing requirements stipulated by the local electricity authorities must be
observed. The plug and wall socket should then give correct earthing. If necessary,
contact an electrician.
Make sure the product is switched off at the socket before service is
performed on electrical parts. It is not sufficient to switch off the product
by the START/STOP key as there will still be voltage to some electrical
parts of the
product
.

765041776 Rev. 006 12
General use
Do not block vent holes in the front panel.
Do not damage the refrigeration system parts.
During normal operation, some parts of the refrigeration system in the
compressor compartment might reach high temperatures, and could therefore
cause burns if touching these components.
Do not use electrical devices inside the product.
To ensure correct and efficient air flow in the cabinet, the shaded areas must be
kept free of items. (see Fig. 6)
All items to be stored, that are not wrapped or packed, must be covered in order
to avoid unnecessary corrosion of the inner parts of the cabinet.
If any controller parameters are changed from default, this could cause that the
product is not functioning normally, and harmful temperatures could damage
items that are kept inside the product.
If the product is turned off, wait minimum 3 minutes before turning it on again.
This is to protect the compressor from damage
Maximum loading of wire shelf: 40 kg
Do not store explosive substances such as aerosol cans with flammable
propellant in this appliance.

765041776 Rev. 006 13
Fig. 6

765041776 Rev. 006 14
Operating the
product
Control elements:
Primary display Display of temperature
Secondary display Display of error codes, alarms,
settings etc.
Control lamps These lamps indicate, which
components/functions are active.
Warning lamps These lamps only lights up if
something is wrong, or action is
required.
Control keys On/off key. Used for turning the
appliance on or off, and exiting the
menu.
P key. Used as selection key and for
activation of a menu in combination
with other keys.
+/- keys. Up/down in setting.
Numeric keys. Setting of parameters.
Starting up:
Plug in the appliance.
 Push to turn on the appliance.
21 3
4 5 -
+
P
P
+-
21 3 4 5

765041776 Rev. 006 15
The display shows the software version, and relevant control lamps light up.
On cold cabinets, or if the cabinet has been turned off for a short time, and the
evaporator temperature is still below the freezing point, a defrost will be activated.
See the chapter “Defrosting”.
Temperature setting:
 Keep pressed. When doing this, the setpoint temperature is displayed.
While is kept pressed, the setpoint can be changed by pressing or .
 Each time or is pressed the temperature will change one degree. The
new value flashes in the display
 When the required setpoint has been set, let go of the keys, a short beep
sounds, and the settings are saved.
Errors and alarms
Display code
Description
OP The door is open.
A1 / OP Door alarm, if the door remains open, or is not closed correctly.
A2 Local high temperature alarm.
A4 External high temperature alarm
Applicable to all alarms: press to confirm the alarm. The display returns to normal
operation.
P
P+-
+-
P

765041776 Rev. 006 16
Display code
Description
F1 Room sensor error.
Error display will continue until the error has been mended.
Service assistance is required.
F2 Evaporator sensor error.
Error display will continue until the error has been mended.
Service assistance is required.
F3* Condenser sensor 1 error.
Error display will continue until the error has been mended.
Service assistance is required.
F4* Condenser sensor 2 error.
(only on products with 2 refrigeration circuits)
Error display will continue until the error has been mended.
Service
assistance is required
.
F7*
FILTER
Too high condenser temperature.
The code is displayed until the condenser temperature returns
to normal.
The cause might be a clogged condenser, or too high ambient
temperature.
If the ambient temperature is too high, the placement of the
cabinet might be wrong, and an alternative place should be
found. Ventilation might help.
If this does not help, request service assistance.
* Applies only to cabinets with built-in compressor.
Cleaning of the condenser filter:
For the refrigeration system to function optimally and thus to maintain the desired
temperature, it is very important to clean the filter in front of the condenser regularly.
It is recommended to have cleaning of the filter added to a cleaning procedure, so
that the cleaning is done at appropriate intervals. Resetting the filter alarm can be
done at any time - even before the alarm is displayed.
Reminder of cleaning the condenser air filter:
After 600 compressor running hours the filter must be cleaned and it is indicated by warning
lights: FILTER .
If the cleaning is not completed within 650 hours, the warnings continue, and an
acoustic alarm sounds.
Resetting the FILTER alarm after cleaning the condenser filter:
After cleaning the air filter, the controller must be reset to remove the alarms.
It can only be reset by using a certain key combination.
 Push three times followed by pushing three times. FILTER alarm lights
green and will disappear after 1 minute.
P

765041776 Rev. 006 17
User menu
User menu overview:
Menu access P + 1



+ /
-
Description
1. Dry refrigeration DC ON/OFF Activation of dry refrigeration.
(on/off)
2. Rapid thaw UF ON/OFF Activation of rapid thaw. (on/off)
3. Local alarm setting LAL LHL °C Setting the upper alarm limit. At
alarm, the display shows:
A2
LHd min. Time delay for the upper alarm
limit.
DA On/off Activation of local door alarm. At
alarm, the display shows: A1
(1=on / 0=off)
DAd min. Time delay for the door alarm.
BU On/off Activation of buzzer. The buzzer
sounds at alarms A1, A2. (1=on /
0=off)
4. External alarm
setting
EAL EHL °C Setting the upper alarm limit. At
alarm, the display shows:
A3
ELL °C Setting the lower alarm limit. At
alarm, the display shows:
A4
EHd
min.
Time delay for upper alarm.
ELd
min.
Time delay for lower alarm.
5. Temperature offset
(sensor
calibration)
CAL CA K -5…+5 K
6. Alarm limits ALL FAS/ESC Setting of alarm limits.
Fixed/escorting.
FAS= fixed limits / ESC = limits
following the setpoint
7. No. of defrosts DEF 4 Number of defrosts in 24 hours.
Note: The numbers at each menu item refer to the numbers in the descriptions on
the following pages.
If a change of the setting is required, get access to the menu by pushing for
more than 3 seconds. The values are changed by pushing the or keys. The
new setting is saved by pushing . To exit the menu, push .
P+1
+-
P

765041776 Rev. 006 18
1. Setting of dry refrigeration
Note : Applies only to products equipped with dry refrigeration.
 Press for more than 3 seconds. The secondary display shows DC.
 Press , the secondary display shows OFF, because the program is off.
 Press , ON flashes in the display.
 Press to confirm, ON lights constantly, and the control lamp DRY lights.
 Press twice to exit the user menu. Dry refrigeration is now active.
 De-activation of dry refrigeration is done in the same way.
2. Setting of rapid thaw
Note: Applies only to products equipped with rapid thaw. The temperature setpoint
must be set between +2C and +8C in order to activate rapid thaw.
 Press for more than 3 seconds.
 Press . The secondary display shows UF.
 Press , the secondary display shows OFF, because the program is off.
 Press , ON flashes in the display.
 Press to confirm, ON lights constantly, and the control lamp lights.
At the same time the thaw symbol is displayed:
 Press twice to exit the user menu. Rapid thaw is now active. The control
lamp flashes, simultaneously the color of the arrow runs from the bottom to
the top.
 When the rapid thaw ends, and are turned off and the controller
returns to normal operation.
P+ 1
P
+
P
PP
+
P>3 sek.
1++/-
5
DC 5 OFF 5
ON
DRY
1 x 2 x
1.
P+ 1
+
P
+
P
PP
+
P>3 sek.
1++/-
5
UF 5 OFF 5
ON
2 x 2 x
2.

765041776 Rev. 006 19
3. Local alarm setting
 Press for more than 3 seconds.
 Press , until the secondary display shows LAL.
 Press , select menu option LHL, LHd, DA, DAd or BU with the key.
 Press to confirm.
 Change the value by using the or key.
 Press to confirm.
 Press 3 times to exit the user menu.
4. Local alarm setting
 Press for more than 3 seconds.
 Press , until the secondary display shows EAL.
 Press , select menu option EHL, ELL, EHd, or ELd with the key.
 Press to confirm.
 Change the value by using the or key.
 Press to confirm.
 Press 3 times to exit the user menu.
P+1
+
P+
P
+-
P
PP
+
P>3 sek.
1++/-
5
+
-
P
LAL
P
+/-
+
-
P
5
LHL 5 25
5
LHd 5 5
5
24
5
4
P
+/-
P
5
DA 5 OFF 5
On
+
-
P
+/-
P
5
DAd 5 55
4
+
-
P
+/-
P
5
BU 5 OFF 5
On
3 x 3 x
3 x
3 x
3 x
3 x
3.
4.
5.
6.
7.
P+ 1
+
P+
P
+-
P
PP
+
P>3 sek.
1++/-
5
+
-
P
EAL
P
+/-
+
-
P
5
EHL 5 25
5
ELL 5 25
5
24
5
24
P
+/-
P
5
EHd 5 554
+
-
P
+/-
P
5
ELd 5 55
4
4 x 3 x
3 x
3 x
3 x
8.
9.
10.
11.

765041776 Rev. 006 20
5. Temperature offset
 Press for more than 3 seconds.
 Press , until the secondary display shows CAL.
 Press , the secondary display shows CA.
 Change the value by using the or key.
 Press to confirm.
 Press 3 times to exit the user menu.
6. Alarm limits
 Press for more than 3 seconds.
 Press , until the secondary display shows ALL.
 Press , the secondary display shows FAS.
 Change the value by using the or key.
 Press to confirm.
 Press twice to exit the user menu.
7. Number of defrosts
 Press for more than 3 seconds.
 Press , until the secondary display shows DEF.
 Press , the secondary display shows the current no. of defrosts ( 4 is
default).
 Change the value by using the or key.
 Press to confirm.
 Press twice to exit the user menu.
P+1
+
P
+-
P
PP
+
P>3 sek.
1++/-
5P
CAL 5 CA 5 051
2 x
5 x
12.
P+ 1
+
P
+-
P
PP
+
P>3 sek.
1++/-
5
ALL 5 FAS 5
ESC
2 x
6 x
13.
P+1
+
P
+-
P
PP
+
P>3 sek.
1++/-
5
DEF 5 45
5
2 x
7 x
14.